Anyone know what the type of uni cloth used to fabricate the engine mount gussets? I have a piece from a kit that looks to be about 3' x 3' stitched to a thin mat. I've looked at Aircraft Spruce, Wicks, FiberGlast and other but none of their pictures seem to match what I have as far as the stitching goes.The old CT manual has a wheeler part number of 119-98-243-01 and just calls it uni cloth 36" x 48"